first and second question can be solved by gas equation while the third question with the formula Q=mc(T2-T1) . where Q is heat energy , m is mass , c is specific heat capacity , T is temperature .
7-A gas mixture consists of N2, O2, and Ne, where the mole fraction of N2 is 0.50 and the mole fraction of Ne is 0.20...
A gas mixture consists of N2, O2, and Ne, where the mole fraction of N2 is 0.55 and the mole fraction of Ne is 0.25. If the mixture is at STP in a 5.0 L container, how many molecules of O2 are present?
6-A 240. mL sample of nitrogen gas is collected at 25.0°C and a pressure of 780 torr. What volume will the gas occupy at a pressure of 0.635 atm and 40.9°C? 7-A gas mixture consists of N2, O2, and Ne, where the mole fraction of N2 is 0.50 and the mole fraction of Ne is 0.20 If the mixture is at STP in a 3.0 L container, how many molecules of O2 are present? 8-Calculate the density of Freon-12, CF2Cl2,...
65. A gas mixture contains 1.25 g N2 and 0.85 g O2 in a 1.55 L con- tainer at 18 °C. Calculate the mole fraction and partial pressure of each component in the gas mixture. 67. The hydrogen gas formed in a chemical reaction is collected over water at 30.0°C at a total pressure of 732 mmHg. What is the partial pressure of the hydrogen gas collected in this way? If the total volume of gas collected is 722 mL,...